Malicious PDF — malware analysis report

Static analysis result for SHA-256 a916f8051dad961b…

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 22:37:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 40c580c26e919a4575258492e2caa3b2 SHA-1: 08eee17432f7558b438e62a129090ce6b391ed0e SHA-256: a916f8051dad961b22d5b04e394027de69765091101dbee37d0a449ae9aa3899
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/how-to-hack-coin-master-game-hack PDF link annotation
    • http://mou16-murmansk.ru/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F3 24096 bytes
SHA-256: 4b996e35b6a75278fa2080974fbc5794783e86e430f20a517d2f4537a2023b1b
font_01_sfnt_off00007f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F22 2988 bytes
SHA-256: 2e674c500c16b8ff43463641e8cc5cf60d02ba3d2aee1a9e41835fd9787bc79e
font_02_sfnt_off0000897e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897E 17880 bytes
SHA-256: 811ddb8557bc0f5be85009fa6d5ae0baa2b7fc09c58d91c5790597872cecd122

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